I don't think Wiggins is a lost cause. I think he needs to be moved and it needs to be the right situation.
I know people are going to think I'm nuts, but if the price is, say, a 1st and expirings, I would seriously examine it.
Let's remember what organization he's coming from for a moment. One not known for excellence, cultivating it, or demanding it. That is, until they suddenly hire a coach not known for much besides asking too much of his main guys and not always the best communicator.